PIETRO FIORENTINI ASX 176, Translation Of Original Instructions

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89
ASX 176
Use, maintenance and warning instructions
HIGH PRESSURE REGULATOR | COMMISSIONING | REV. 00
EN
Step Action
1 Partially open the drain cock (6).
2 Completely unscrew the fixing nut and adjusting screw (fig. 8.30) of the pilots (3, 11) to relieve the spring.
3 Completely compress the pilot spring (3) by turning the adjusting screw (fig. 8.30) clockwise.
4 Completely relieve the pilot spring (11) by turning the adjusting screw (fig. 8.30) anti-clockwise.
5
Open the upstream shut-off valve (V1) very slowly.
NOTICE!
Check the pressure by referring to the pressure gauge (4) located upstream.
6
Turn the adjusting screw (fig. 8.30) of the monitor pilot (11) clockwise to increase the downstream pressure
value to the selected monitor operating value.
NOTICE!
Check the pressure referring to the pressure gauge (5) located upstream.
7
Turn the adjusting screw (fig. 8.30) on the pilot (3) anti-clockwise to relieve the calibration spring until the pre-
set downstream pressure value has been reached.
8
Check that the PM/176 monitor (8) is fully open (100%) by checking the position of the stroke indicator rod
(fig. 4.5).
NOTICE!
Check the pressure referring to the pressure gauge (5) located upstream.
9 Slowly close the drain cock (6).
10
Check that the downstream pressure, after an increase phase, does not exceed the shut-off pressure value
(refer to the SG value on the nameplate, see 2.8).
NOTICE!
• If the downstream pressure exceeds the shut-off pressure value, refer to chapter 10 “Fault
search and troubleshooting” to remove the causes of the malfunction;
• Check the pressure referring to the pressure gauge (5) located upstream.
11
Check all joints between the shut-off valves (V1, V2) for sealing.
NOTICE!
Check for sealing with a foaming substance.
12
Slowly open the downstream shut-off valve V2 until the piping has been completely filled.
NOTICE!
• If at the beginning of this operation, the pressure in the piping is much lower than the cali-
bration pressure, shutter the opening of this valve so as not to exceed the maximum flow
rate of the system;
• Check the pressure referring to the pressure gauge (5) located upstream.
13 Insert and secure the adjusting screws and fixing nuts (fig. 8.30) of the pilots (3, 11).
Tab. 8.53.